Shuttle



Nov. 4, 1952 J. T. POSPISZEL SHUTTLE Filed April 14, 1951 INVENTOR QM/ 7hm; W

ATTORNEYS Patented Nov. 4, 1952 SHUTTLE Joseph ,1. Ppspiszel, North Broadalbin,.N. 35., as-- signer o Moh wk G rn t, Mi ls, I c Ams er- 11 m, It a co por n of New York Application April 14, 1951, Serial No. 221,063 4 Claims. (01. 139 216) This invention relates to shuttles oi the'type employed in carpet looms and is concerned more particularly with a novel shuttle, which although of standard length, is so constructed that it will hold a yarn package of usual cross-section but of greater length than can be employed in similar prior shuttles. The new shuttle, will, accordingly, run for a longer time without change than the prior shuttles and its use makes possible increased loom production.

The shuttle of the invention is generally similar to that disclosed in Cheney Patent 1,580,960 but diiiers therefrom. in that it is provided with a tension device differing in construction and arrangement from that used in the patented shuttle. As a result of the changes referred to, much of the space occupied in the former shuttle by the tension device is available for the yarn cop and the longer cop contains a substantially greater quantity of yarn than that forme lly required.

For a better understanding of the invention, reference may be made to the accompanying drawing, in which Fig. 1 is a vertical longitudinal sectional view t rough the new shuttle on the line |.-l of Fig. 2 with the cop in place;

Fig. 2 is a top plan view of the loaded shuttle with parts broken away;

Figs. 3 and i are diagrammatic vertical longitudinal sectional views of the new shuttle andthe p r s l r spe tively.

Fig. 5 is a view in side elevation of a mfldififid form of the lever of the tension means; and

Fig. 6 is a bottom plan view of the lever.

The shuttle, in the form shown in Fig. 1, comprises an elongated wooden body l0, ordinarily square in outline, with rounded corners and pointed at its ends, the ends being provided with pointed metallic blocks I l in the usual way. The body has a lengthwise cavity i2, open through its top, in which is mounted the cop IS, the cop being a long cylindrical yarn mass having one pointed end and no core. The walls of the cavity are provided with sawtooth ribs l2a for engaging and holding the cop, and, at one end, the walls of the cavity taper inward to conform to the shape of the pointed end of the cop. At that end, a pivot pin It is mounted in the cavity walls to extend across the cavity, and a cover I5 is pivotally mounted on the pin, the cover being of thin sheet metal and provided with a flange |5a at its free end.

At the end of the cavity remote from that at which the cover is pivoted, the bottom of the cavity is formed with a step 15, and a tubular yarn guide ll is mounted in an opening in the bottom of the step and forms a passage for the yarn Uta drawn from the interior of the cop. At the outer end of the step and beyond the passage, a latch is is pivoted on a pin lSa mounted in the walls of the cavity to extend across the latter. The hooked end of the latch is engageable with the flange l5a on the cover, upon depression of the free end of the latter, and, when the cover is latched in place, it engages the top of the cop in the cavity and holds the cop tightly in position. The butt end of the cop lies in contact with a pin l9 mounted to extend across the cavity at the inner end of the step and acting as a stop for the cop.

Tension is applied to the yarn passing from the interior of the cop through guide ll by a tension device, which comprises a fixed pin 29, mounted in the walls of the cavity above the step inward from the axis of the guide. The yarn from the cop passes over the pin and beneath a lever 2i, pivoted on a transverse pin 22 and having an inner end 2 la adapted to press the yarn against pin 26. The lever is urged to clamping position by spring means and, in the con. struction illustrated, the outer end 21b of the lever is engaged from beneath by a coil spring 23 bearing at one end against the lever and having its other end entering a threaded bore through the bottom of the step, where it engages the upper end of a'plug 24, threaded into the passage. By turning the plug in or out, the force of the spring can, be varied to adiust'the clamping action or the lever and thus vary the tension imposed on the yarn,

The lever may be made of metal, but, when the shuttle is used with abrasive yarn, such as jute, the yarn-engaging elements of the tension device, namely, pin 29 and the inner end of lever 2|, wear rapidly. For such use, it is preferred to equip the shuttle with the lever shown in Fig 5, this lever including a body 25 of a suitable synthetic material, such as a resin, having a trans! verse socket at its inner end, in which is inserted ing flange having openings, through one of which the yarn from the cop I3 is led. The other end 28' of the lever lies beneath a transverse pin 20', and the lever is urged counter-clockwise by a spring 23 to cause end 28b to clamp the yarn against the under side of pin 20'. The yarn guide IT is mounted in an opening through the step and lies outward from the tension device.

A comparison of the new shuttle, illustrated in Fig. 3, with the prior shuttle, shown in Fig. 4, will make evident that, by the use of the tension device in the new form and arrangement shown in Fig. 3, a cop of substantially greater length may be mounted in the shuttle. In the Fig. 3 construction, the tension device lies wholly above the step, whereas, in the shuttle of Fig. 4, the tension device lies inward from the step. The extra cop space provided in the new construction represents a substantial additional length of yarn, which can be carried in the new shuttle, and, because of this, the new shuttle can be run for a considerably greater length of time than the old shuttle, with a corresponding increase in loom production.

I claim:

1. A shuttle, which comprises an elongated body having a lengthwise cavity open through one wall of the body and adapted to receive a yarn cop, the cavity having a stop for one end of the cop and a step in its bottom beyond the stop at one end of the cavity, a yarn passage through the bottom of the step, a pin extending across the cavity above the step inward from the axis of the passage, a substantially straight yarn-clamping lever pivoted within the cavity above the step outwardly from the axis of the passage, the lever extending across the inner end of the passage and having an inner end adapted to clamp the yarn from the cop against the Pin, a spring within the cavity acting on the lever and urging it toward clamping position, a cover pivoted within the cavity adjacent the end remote from the step and adapted to overlie the cavity and step and engage the cop, and a latch mounted in the cavity outwardly from the lever and engageable with the cover to hold it in place.

2. A shuttle, which comprises an elongated body having a lengthwise cavity open through one wall of the body and adapted to receive a yarn cop, the cavity having a stop for one end of the cop and a step in its bottom beyond the stop at one end of the cavity, a yarn passage through the bottom of the step, a pin extending across the cavity above the step inward from the axis of the passage, a substantially straight yarnclamping lever pivoted within the cavity above the step outwardly from the axis of the passage, the lever extending across the inner end of the passage and having an inner end adapted to clamp the yarn from the cop against the pin, a spring within the cavity acting on the outer end of the lever from beneath and urging the lever toward clamping position, a cover pivoted within the cavity adjacent the end remote from the step and adapted to overlie the cavity and step and engage the cop, and a latch mounted in the cavity outwardly from the lever and engageable with the cover to hold it in place.

3. A shuttle, which comprises an elongated body having a lengthwise cavity open through one wall of the body and adapted to receive a yarn cop, the cavity having a stop for one end of the cop and a step in its bottom beyond the stop at one end of the cavity, a yarn passage through the bottom of the step, a pin extending across the cavity above the step inward from the axis of the passage, a substantially straight yarn-clamping lever pivoted within the cavity above the step outwardly from the axis of the passage, the lever extending across the inner end of the passage and having an inner end adapted to clamp the yarn from the cop against the pin, a spring within the cavity having one end bearing on the outer end of the lever from beneath, the spring urging the lever toward clamping position and having its other end received in a socket in the bottom of the step, a member within the socket engaging the end of the spring therein and adjustable to vary the action of the spring on the lever, a cover pivoted within the cavity adjacent the end remote from the step and adapted to overlie the cavity and step and engage the cop, and a latch mounted in the cavity outwardly from the lever and engageable with the cover to hold it in place.

4. A shuttle, which comprises an elongated body having a lengthwise cavity open through one wall of the body and adapted to receive a yarn cop, the cavity having a stop for one end of the cop and a step in its bottom beyond the stop at one end of the cavity, a yarn passage through the bottom of the step, a pin extending across the cavity above the step inward from the axis of the passage, a substantially straight yarnclamping lever pivoted within the cavity above the step outwardly from the axis of the passage, the lever extending across the inner end of the passage and having an inner end containing a removable wear element adapted to clamp the yarn from the cop against the pin, a spring within the cavity acting on the lever and urging it toward clamping position, a cover pivoted within the cavity adjacent the end remote from the step and adapted to overlie the cavity and step and engage the cop, and a latch mounted in the cavity outwardly from the lever and engageable with the cover to hold it in place.

JOSEPH T. POSPISZEL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

